{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "RESULTS : Urinary NGF , PGE2 and PGF2alpha were significantly increased in patients with OAB compared with controls ( p < 0 . 05 ) ."}
{"Disease": ["OAB"], "Chemical": ["PGE2", "PGF2alpha"]}